Nut-lock



(No Model.) 7

J. A. BNSLEY.

NUT LOOK.

Patented June 9, I896.

Witnesses: Inventor.

Attorney.

the screw-thread on the bolt. the nut D may be varied at will, and whereUNITED STATES PATENT EEicE.

JAMES A. ENSLEY, OF COVINGTON, KENTUCKY, ASSIGNOR OF ONE-THIRD TO JOHNB. SIMON, OF NEWPORT, KENTUCKY.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 561 ,77'6, dated June9, 1896.

Application iiled December 7,1895. Serial No. 571,365. (No model.)

To all whom it may concern.-

Be it known that 1, JAMES A. EivsLEY, a citizen of the United States,and a resident of the city of Covington, in the county of Kenton andState of Kentucky, have invented certain new and useful Improvements inNut-Locks, of which the following is a specification.

The several features of my invention and the various advantagesresulting from their use, conjointlyor otherwise, will be apparent fromthe following; description and claims.

In the accompanying drawings, making a part of this application, and inwhich similar letters of reference indicate corresponding parts, Figurel is aview in perspective of a bolt and nut and locking-key constructedaccording to my invention. Fig. 2 is a viewin perspective of thelocking-key, shown on an enlarged scale. Fig. 3 is an end view of thenut. Fig. 4. is an elevation of the bolt and a vertical central sectionof the nut and an edge view of the key, these parts being lockedtogether and showing a mode of applying the key to the bolt. Fig. 5 isan elevation of the bolt and a vertical central section of the nut andelevation of the key and illustrating a mode of using the key when theend of the bolt remains in the nut when the latter is in place. Figs. 3,4t, and 5 are on the same scale as Fig. 1. Fig. (3 is a view inperspective of a nut and a punch constructed by me to form the nutaccording to my invention. Fig. 7 is an elevation of the end portion Hof the bolt.

1 will now proceed to describe my invention in detail.

A indicates the bolt. This bolt may vary in size and shape, and the headportion B may be of any desired configuration. That end ll of the boltwhich is opposite to the head is screw-threaded. .This screw-thread Cmay be of any desired pitch and size. A nut D is provided and therein isformed a screw-thread E of a kind suitable to engage The shape of amonkey-wrench or similar form of wrench is to be employed and applied tothe edges of the nut to turn the latter the latter will have a requisitenumber of flat sides, as F, on what would otherwise be denominated theperiphery of the nut.

To apply my invention, I provide a groove G across the end H of thebolt. This groove may be formed by raised flanges or ridges, but ispreferably formed by cutting into the metal of the end of the bolt, asshown. Such a mode is more advantageous, as it economizes metal and ismore readily and cheaply carried into effect. In the nut I form areceptacle for the key K. In application one end of the key isheld bythe nut screwed onto the bolt, and the key is then bent or moved intothe groove in the end llof the bolt.

A novel and advantageous mode of holding the key consists as follows: 1form in the nut a groove M, interrupting the screw-thread of the nut atthe point where the screwthread is present, the groove being parallel,or substantially so, to the axis of the screw-hole of the nut, and toprevent the key from slipping forward lprovide it with a head K A cheapand convenient mode of forming this head consists in bending up one endof the straight piece which is to form the key. The keypiece preferablyfills the groove M to or nearly to the plane where the threads of thebolt would come.

here the key K with head K is employed and it is desired the head shallnot project beyond that side of the nut which is toward the head of thebolt, I provide a recess M in the nut at the end of the groove M, asshown, for the reception of said head of the bolt. If this recess werenot present and the head K were present outside of the nut D and betweenthe latter and the head of the bolt, the head would take up valuableroom and abbreviate the valuable working port-ion of the bolt.

In applying my perfected invention in its most advantageous form Iproceed as follows The belt is applied to connect those parts of thesplice, union, structure, or mechanism for which it is designed orutilized. The key K is then placed in position in the groove M of thenut and its head K is located in the recess M The nut is now screwedonto the bolt and screwed home, thereby performing its functions ofholding together the parts it was designed to connect. The key K, exceptits head, is thus far straight, and it is of some non-elastic material,the preferred material being a non-elastic metal capable of beingreadily bent. That part of the key projecting beyond the end H of thebolt is now bent down into the adjacent groove G of the bolt,substantially as shown in the drawings. \Vhere the end H of the boltprojects beyond the adjacent face of the nut, the free end of the key ispreferably bent around the end of the bolt, as shown in Fig. 1; but inother cases the preferred length of the key beyond the nut does notexceed the diameter of the bolt. Then the key can be readily bent intothe groove G of the bolt whether the faces of the end of the free end Hof the bolt and the back side P of the nut are in the same plane (seenin Fig. at) or the end of the bolt is within the nut, (see Fig. 5,) thebolt in the latter case being somewhat short.

The bolt can be unlocked byhuman agency properly and intelligentlyapplied to unlock it, but will be thoroughly locked and the nut will notunscrew through vibrations of the parts nor by force (Within reasonablelimits) brought to bear against or in connection with the faces orperiphery of the nut.

It will be observed that the construction of my lockin g device inconnection with the bolt and nut is simple. My device is obviously cheapand economical of construction and of material. The invention is easilyapplied and effective in function and advantageous in results.

As before indicated, my invention is applicable to the nut and boltwhether the end of the bolt projects beyond the face P of the nut or isflush therewith, and, being short of length, remains within the nut.

When desired, more than one transverse groove G may be present in theend of the bolt. Such increase in the number of grooves will rarely benecessary, except in cases where great nicety of adjustment of thecoupling union is required.

Fig. 6 illustrates a means and mode of forming the groove M and recess MR in- 1 dicates the punch, having a shank R of size to form thescrew-hole of the nut. At one side of the shank and longitudinaltherewith is a fin or raised portion R and farther back on the portion Ris another fin R, whose outer edge or back extends still farther outfrom the axis of the punch than does the back of portion R When thepunch is made to operate on the blank which is to form the nut, theshank R punches out the main hole and the raised portion R punches outthe groove M and the fin It makes the recess M the punch stopping afterthe fin R has advanced far enough into the iron of the nut-blank to formsaid recess M Fig. 6 shows the nut as having been already operated uponby the punch. This operation indicates the simplicity of the operationwhereby the groove M and recess M are formed simultaneously with thescrew-hole of the nut.

What I claim as new and of my invention, and desire to secure by LettersPatent, is

1. In anut-lock, the combination of the bolt having the end transversegroove, and a nut having the groove M, and the recess M at the end ofthe groove, and the key havingthe head adapted to fit the recess M whilethe key fits into the groove, and is bent so as to interfit the grooveof the bolt, substantially as and for the purposes specified.

2. In a nut-lock, the combination of the bolt having end groove, and anut having groove M terminating in recess M and a headed'key K, K whosehead fits in the recess M and a part of its shank lies in groove M, anda portion of its shank is bent down into the boltgroove, and a remainingportion bent back on the other side of the bolt from where the key liesin groove M, thereby forming an embracing-clasp, substantially as andfor the purposes specified.

3. In a lock, the combination of a bolt A, having the end portion Hserew-threaded with thread 0, and having a groove G at, in and acrossthe extremity of the end portion H of the bolt, and a nut D having aninterior thread E registering with and engaging the thread 0 of thebolt, this nut having a transverse groove M extending from the front tothe rear of the nut, interrupting the screw-thread of the nut and anenlargementof the groove M in the nut and at the rear of the groove(toward the bolt-head) and a key having a head I, fitting in the saidenlargement of the groove M, and extending forward in the groove M, andforward along the bolt, and at the end of the latter extending acrossthe end of the bolt and located in the end groove G thereof,substantially as and for the purposes specified.

4. In a nut-lock, the combination of a bolt A having the end portion IIscrew-threaded with thread 0, and having a groove G at, in and acrossthe extremity of the end portion H of the bolt, and a nut D having aninterior thread E registering with and engaging the thread 0 of thebolt, the nut D having a transverse groove M extending from the front tothe rear of the nut, interrupting the screwthread of the nut, and avertical recess 3 in the rear side of the nut and joined to the groove Mand extending radially out beyond the groove, and a key K having a headK at right angles to the axial line of the bolt, and fitted in therecess M of the nut, a portion of the shank received in groove M, and aportion bent across the threaded end of the bolt and at right angles tothe length of the latter and received into the groove G in said end,substantially as and for the purposes specified.

JAMES A. ENSLEY.

Attest:

WM. E. J ONES, K. SMITH.

ICO

IIO

